E-STOP relays, safety gate monitors

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Gertebild

][Bildunterschrift

Safety relay for monitoring E-STOP
pushbuttons and safety gates.

Approvals

Zulassungen

Unit features

Gertemerkmale



Positive-guided relay outputs:
– 3 safety contacts (N/O), instanta-

neous

– 1 auxiliary contact (N/C), instan-

taneous



1 semiconductor output



Connection options for:
– E-STOP pushbutton
– Safety gate limit switch
– Reset button



LED indicator for:
– Switch status channel 1/2
– Supply voltage



Semiconductor output signals:
– Switch status channel 1/2



See order reference for unit types

Unit description

Bestimmung/Gertebeschreibung NOT-AUS, Schutz_PNOZ

The safety relay meets the require-
ments of EN 60947-5-1, EN 60204-1
and VDE 0113-1 and may be used in
applications with



E-STOP pushbuttons



Safety gates

Gertebeschreibung

and as safety component in accord-
ance with the Lift Directive 95/16/EC
and EN 81-1.

Safety features

][Sicherheitseigenschaften Schaltgerät_allgemeiner Teil

The relay meets the following safety
requirements:



The circuit is redundant with built-in
self-monitoring.



The safety function remains effec-
tive in the case of a component fail-
ure.



The correct opening and closing of
the safety function relays is tested
automatically in each on-off cycle.

Sicherheitseigenschaften Zusatz - AC/DC-Gerte_PNOZ



The tranformer is short circuit-
proof. An electronic fuse is used on
a DC supply.

Block diagram

B

lo

c

k

s

c

h

a

ltb

il

d

PNOZ X3







Input

Input

S11 S12

A1 A2

=

Power

~

K1

K2

S21 S22

13 23 33 41

14 24 34 42

Reset/

Start

S13 S14

Input

S31 S32

Reset/

Start

S33 S34

24 V

Y32

~

=

B1 B2

Y31

E-STOP relays, safety gate monitors

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

-2

Function description

][Funktionen_einkanalig



Single-channel operation: no re-
dundancy in the input circuit, earth
faults in the reset and input circuit
are detected.

][Funktionen_zweikanalig_mit_quer_ber



Dual-channel operation with detec-
tion of shorts across contacts: re-
dundant input circuit, detects

– earth faults in the reset and input

circuit,

– short circuits in the input circuit

and, with a monitored reset, in
the reset circuit too,

– shorts between contacts in the

input circuit.

][Funktionen_autoStart



Automatic start: Unit is active once
the input circuit has been closed.

][Funktionen_berStart_Wartezeit



Monitored reset: Unit is active once
the input circuit is closed and once
the reset circuit is closed after the
waiting period has elapsed
(see technical details).

][Funktionen_Kontaktvervielfachung



Increase in the number of available
instantaneous safety contacts by
connecting contact expansion
modules or external contactors.

Timing diagram

][Z

e

itd

ia

g

ra

m

m

_

a

u

to

_

u

e

b

e

r2

_

a

u

x

_

s

e

m

iC

H

Key



Power: Supply voltage



Reset/Start: Reset circuit S13-S14,
S33-S34



Input: Input circuits S11-S12, S21-
S22, S31-S32



Output safe: Safety contacts 13-14,
23-24, 33-34



Output aux: Auxiliary contacts 41-
42



Out semi CH: Semiconductor out-
put switch status channel 1/2



: Automatic reset



: Monitored reset



t

1

: Switch-on delay



t

2

: Delay-on de-energisation



t

3

: Recovery time



t

4

: Waiting period

Wiring

][Verdrahtung_Si_unverz_1Hi_unverz

Please note:



Information given in the “Technical
details” must be followed.



Outputs 13-14, 23-24, 33-34 are
safety contacts, output 41-42 is an
auxiliary contact (e.g. for display).



To prevent contact welding, a fuse
should be connected before the
output contacts (see technical de-
tails).



Calculation of the max. cable runs
l

max

in the input circuit:

R

lmax

= max. overall cable resist-

ance (see technical details)
R

l

/km = cable resistance/km



Use copper wire that can withstand
60/75 °C.



Sufficient fuse protection must be
provided on all output contacts with
capacitive and inductive loads.

POWER

Input

Output safe

Output aux.

Reset/Start

t

1

t

2

t

1

t

2

1

2

Out semi CH

t

1

t

2

t

1

t

2

t

4

t

4

t

3

R

lmax

R

l

/ km

I

max

=

E-STOP relays, safety gate monitors

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Preparing for operation

Betriebsbereitschaft herstellen



Supply voltage



Input circuit

Supply voltage

AC

DC

A1

L1

N

A2

B2

PE

B1

L+

L-

B2

Input circuit

Single-channel

Dual-channel

E-STOP
without detection of shorts across con-
tacts

E-STOP
with detection of shorts across contacts

Safety gate
without detection of shorts across con-
tacts

Safety gate
with detection of shorts across contacts

S1

S22

S21

S12

S32

S11

S31

S1

S22

S31

S32

S21

S12

S11

S1

S22

S21

S12

S32

S11

S31

S1

S2

S12

S11

S22

S32

S21

S31

E-STOP relays, safety gate monitors

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

-4



Reset circuit



Feedback loop



Semiconductor output



Key

Reset circuit

E-STOP wiring
Safety gate without position monitoring

Safety gate with position monitoring

Automatic reset

Monitored reset

S13

S14

S2

S1

S13
S14

S33

S34

S3

Feedback loop

Automatic reset

Monitored reset

Contacts from external contactors

K5 K6

K5

L1
N

K6

S13

13 (23, 33)

S14

14 (24, 34)

K5 K6

K5

L1

K6

S33
S34

S3

N

13 (23, 33)
14 (24 ,34)

Y31
Y32

24 V DC
SPS Input

0 V

B2

SPS 0 V

S1/S2

E-STOP/safety gate switch

S3

Reset button

Switch operated

Gate open

Gate closed

E-STOP relays, safety gate monitors

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Terminal configuration

K

le

m

m

e

n

b

e

le

g

u

n

g

Installation

Montage_PNOZ_X



The safety relay should be installed
in a control cabinet with a protec-
tion type of at least IP54.



Use the notch on the rear of the unit
to attach it to a DIN rail.



Ensure the unit is mounted securely
on a vertical DIN rail (35 mm) by us-
ing a fixing element (e.g. retaining
bracket or an end angle).

Dimensions

A

b

m

e

s

s

u

n

g

e

n

19968

PNOZ X3

A1 B1 13

S21

23

S22

33

S33

41

S34

S31 S32 S11 S12 S13 S14

POWER
CH. 1
CH. 2

14 24 34

A2

B2

42

Y32

14 24 34 42

33

13 23

41

Y31

121 (4.76")

75 (2.95")

87 (3.42")

45

(1.77")

E-STOP relays, safety gate monitors

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

-6

Notice

][Wichtig_PDB

This data sheet is only intended for use
during configuration. Please refer to
the operating manual for installation
and operation.

Service life graph

Lebensdauerkurve_Relais_Text vor Kurve

The service life graphs indicate the
number of cycles from which failures
due to wear must be expected. The
wear is mainly caused by the electrical
load; the mechanical load is negligible.

L

e

b

e

n

s

d

a

u

e

rk

u

rv

e

Lebensdauerkurve_Relais_Text nach Kurve_SIR_SLR Bsp

Example



Inductive load: 0,2 A



Utilisation category: AC15



Contact service life: 4,000,000 cy-
cles

Provided the application requires few-
er than 4,000,000 cycles, the PFH val-
ue (see technical details) can be used
in the calculation.

To increase the service life, sufficient
spark suppression must be provided
on all output contacts. With capacitive
loads, any power surges that occur
must be noted. With contactors, use
freewheel diodes for spark suppres-
sion.

][Technische Daten PNOZ

Technical details

Electrical data

Supply voltage

Supply voltage U

B

AC

24 V, 42 V, 48 V, 110 V, 115 V, 120 V, 230 V, 240 V

Supply voltage U

B

DC

24 V

Voltage tolerance

-15 %/+10 %

Power consumption at U

B

AC

5.0 VA

Power consumption at U

B

DC

2.5 W

Frequency range AC

50 - 60 Hz

Residual ripple DC

160 %

Voltage and current at

Input circuit DC: 24.0 V

50.0 mA

Reset circuit DC: 24.0 V

35.0 mA

Feedback loop DC: 24.0 V

20.0 mA

E-STOP relays, safety gate monitors

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Number of output contacts

Safety contacts (S) instantaneous:

3

Auxiliary contacts (N/C):

1

Utilisation category in accordance with EN 60947-4-1

Safety contacts: AC1 at 240 V

I

min

: 0.01 A , I

max

: 8.0 A

P

max

: 2000 VA

Safety contacts: DC1 at 24 V

I

min

: 0.01 A , I

max

: 8.0 A

P

max

: 200 W

Auxiliary contacts: AC1 at 240 V

I

min

: 0.01 A , I

max

: 8.0 A

P

max

: 2000 VA

Auxiliary contacts: DC1 at 24 V

I

min

: 0.01 A , I

max

: 8.0 A

P

max

: 200 W

Utilisation category in accordance with EN 60947-5-1

Safety contacts: AC15 at 230 V

I

max

: 5.0 A

Safety contacts: DC13 at 24 V (6 cycles/min)

I

max

: 6.0 A

Auxiliary contacts: AC15 at 230 V

I

max

: 5.0 A

Auxiliary contacts: DC13 at 24 V (6 cycles/min)

I

max

: 6.0 A

Contact material

AgSnO2 + 0.2 µm Au

External contact fuse protection (I

K

= 1 kA) to EN 60947-5-1

Blow-out fuse, quick

Safety contacts:

10 A

Auxiliary contacts:

10 A

Blow-out fuse, slow

Safety contacts:

6 A

Auxiliary contacts:

6 A

Circuit breaker 24 VAC/DC, characteristic B/C

Safety contacts:

6 A

Auxiliary contacts:

6 A

Semiconductor outputs (short circuit proof)

24.0 V DC, 20 mA

External supply voltage

24.0 V DC

Voltage tolerance

-20 %/+20 %

Max. overall cable resistance R

lmax

input circuits, reset circuits

single-channel at U

B

DC

150 Ohm

single-channel at U

B

AC

180 Ohm

dual-channel with detect. of shorts across contacts at U

B

DC

15 Ohm

dual-channel with detect. of shorts across contacts at U

B

AC

30 Ohm

Min. input resistance when switching on

130 Ohm

Safety-related characteristic data

PL in accordance with EN ISO 13849-1: 2006

PL e (Cat. 4)

Category in accordance with EN 954-1

Cat. 4

SIL CL in accordance with EN IEC 62061

SIL CL 3

PFH in accordance with EN IEC 62061

2.31E-09

SIL in accordance with IEC 61511

SIL 3

PFD in accordance with IEC 61511

2.03E-06

T

M

[year] in accordance with EN ISO 13849-1: 2006

20

Times

Switch-on delay

with automatic reset typ.

250 ms

with automatic reset max.

500 ms

with automatic reset after power on typ.

280 ms

with automatic reset after power on max.

550 ms

on monitored reset with rising edge typ.

35 ms

on monitored reset with rising edge max.

50 ms

Electrical data

E-STOP relays, safety gate monitors

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

-8

Technische Daten_Satz No.

No. stands for order number.

Si-Kennzahlen_Zusatz_Relais_Lebensdauer_PDB

It is essential to consider the relay's
service life graphs. The relay outputs'
safety-related characteristic data is
only valid if the values in the service life
graphs are met.
The PFH value depends on the switch-
ing frequency and the load on the relay
output.

If the service life graphs are not acces-
sible, the stated PFH value can be
used irrespective of the switching fre-
quency and the load, as the PFH value
already considers the relay's B10d val-
ue as well as the failure rates of the
other components.

Si_Kennzahlen_Erläuterung_1

Delay-on de-energisation

with E-STOP typ.

15 ms

with E-STOP max.

30 ms

with power failure typ.

50 ms

with power failure max.

70 ms

Recovery time at max. switching frequency 1/s

after E-STOP

50 ms

after power failure

100 ms

Waiting period with a monitored reset

with rising edge

300 ms

Min. start pulse duration with a monitored reset

with rising edge

30 ms

Simultaneity, channel 1 and 2

∞

Supply interruption before de-energisation

20 ms

Environmental data

EMC

EN 12015, EN 12016, EN 60947-5-1, EN 61000-6-2

Vibration to EN 60068-2-6

Frequency

10 - 55 Hz

Amplitude

0.35 mm

Climatic suitability

EN 60068-2-78

Airgap creepage in accordance with EN 60947-1

Pollution degree

3

Overvoltage category

III / II

Rated insulation voltage

250 V

Rated impulse withstand voltage

4.00 kV

Ambient temperature

-20 - 55 °C

Storage temperature

-40 - 85 °C

Protection type

Mounting (e.g. cabinet)

IP54

Housing

IP40

Terminals

IP20

Mechanical data

Housing material

Housing

PPO UL 94 V0

Front

ABS UL 94 V0

Cross section of external conductors with screw terminals

1 core flexible

0.20 - 4.00 mm² , 24 - 10 AWG

2 core, same cross section, flexible:

with crimp connectors, without insulating sleeve

0.20 - 2.50 mm² , 24 - 14 AWG

without crimp connectors or with TWIN crimp connectors

0.20 - 2.50 mm² , 24 - 14 AWG

Torque setting with screw terminals

0.60 Nm

Dimensions

Height

87.0 mm

Width

45.0 mm

Depth

121.0 mm

Weight

375 g

Times

E-STOP relays, safety gate monitors

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Up to PL e of EN ISO 13849-1
PNOZ X3

1002239-EN-02-2011-10

All the units used within a safety function must be considered when calculating the safety characteristic data.

Si_Kennzahlen_Erläuterung_2

INFORMATION
A safety function's SIL/PL values are
not identical to the SIL/PL values of
the units that are used and may be dif-
ferent. We recommend that you use
the PAScal software tool to calculate
the safety function's SIL/PL values.

Technische Daten_Satz Normen

The standards current on 2010-07 apply.

][Dauerstrom_ACDC

Bestelldaten

Conventional thermal current while loading several contacts

Number of contacts

I

th

at U

B

DC

I

th

at U

B

AC

1

8.00 A

8.00 A

2

8.00 A

7.50 A

3

7.00 A

6.50 A

Order reference

Type

Features

Terminals

Order no.

PNOZ X3

24 VAC

24 VDC

Screw terminals

774 310

PNOZ X3

42 VAC

24 VDC

Screw terminals

774 311

PNOZ X3

48 VAC

24 VDC

Screw terminals

774 312

PNOZ X3

110 VAC

24 VDC

Screw terminals

774 314

PNOZ X3

115 VAC

24 VDC

Screw terminals

774 315

PNOZ X3

120 VAC

24 VDC

Screw terminals

774 316

PNOZ X3

230 VAC

24 VDC

Screw terminals

774 318

PNOZ X3

240 VAC

24 VDC

Screw terminals

774 319